PLANT, COMBUSTION APPARATUS, AND METHOD FOR REDUCTION OF NOx EMISSIONS
    82.
    发明申请
    PLANT, COMBUSTION APPARATUS, AND METHOD FOR REDUCTION OF NOx EMISSIONS 审中-公开
    工厂,燃烧装置和减少NOx排放的方法

    公开(公告)号:US20160146462A1

    公开(公告)日:2016-05-26

    申请号:US14550101

    申请日:2014-11-21

    Abstract: A combustion apparatus includes a combustion chamber having multiple combustion zones. A first wind box is in communication with the first combustion zone to feed the fuel to be fed into the combustion chamber for initial combustion of the fuel within the first combustion zone. A second wind box has a reburner in communication with the second combustion zone. The reburner is configured to feed fuel, a reagent and a first portion of the flue gas to be recycled to the second combustion zone into the second combustion zone to reduce nitrogen oxide emissions of the apparatus. A third wind box is in communication with the third combustion zone to feed air to the third combustion zone to complete the combustion process.

    Abstract translation: 燃烧装置包括具有多个燃烧区域的燃烧室。 第一风箱与第一燃烧区域连通,以将要进料到燃料室的燃料供给到第一燃烧区域内的燃料的初始燃烧。 第二风箱具有与第二燃烧区连通的再生器。 再造剂构造成将燃料,试剂和第一部分烟道气送入第二燃烧区进入第二燃烧区,以减少装置的氮氧化物排放。 第三风箱与第三燃烧区连通,以将空气送入第三燃烧区以完成燃烧过程。

    REACTOR EMPLOYING HIGH-TEMPERATURE AIR COMBUSTION TECHNOLOGY
    83.
    发明申请
    REACTOR EMPLOYING HIGH-TEMPERATURE AIR COMBUSTION TECHNOLOGY 有权
    采用高温空气燃烧技术的反应器

    公开(公告)号:US20100143854A1

    公开(公告)日:2010-06-10

    申请号:US12665163

    申请日:2008-06-19

    Abstract: In a burning air feeding device (9) of alternating heat-exchanging type, the feed of burning air and the discharge of a burned exhaust gas are performed at the speeds of 80 to 200 m/sec. A burner structure (4) is constituted such that a low-calorie fuel gas is preheated with the heat of a precombustion high-calorie fuel gas till the low-calorie fuel gas reaches a mixing starting zone (CA), and such that the precombustion high-calorie fuel gas and the low-calorie fuel gas are burned together in the mixing starting zone (CA). The sum (Q1+Q2) of an air quantity (Q1) fed from the hot air feeding ports of a plurality of fuel gas burning devices and an air quantity (Q2) of a precombustion air to be mixed with the high-calorie fuel gas in the plural fuel gas burning devices is set to 1.02 to 1.10 times as high as the stoichiometric air quantity (Qs) necessary for the combustion, and the ratio (Q2/(Q1+Q2)) is set within the range of 0.011 to 0.047.

    Abstract translation: 在交替热交换型的燃烧空气供给装置(9)中,以80〜200m /秒的速度进行燃烧空气的供给和燃烧废气的排出。 燃烧器结构(4)构成为使得低热量燃料气体用预燃高热量燃料气体的热量预热,直到低热量燃料气体到达混合起始区域(CA),并且使得预燃 高热量燃料气体和低热量燃料气体在混合起始区域(CA)中一起燃烧。 从多个燃料气体燃烧装置的热空气供给口供给的空气量(Q1)和与高热量燃料气体混合的预燃空气的空气量(Q2)的总和(Q1 + Q2) 在多个燃料气体燃烧装置中,设定为燃烧所需的理论空燃比(Qs)的1.02〜1.10倍,比率(Q2 /(Q1 + Q2))设定在0.011〜0.047的范围内 。

    Combustion apparatus
    85.
    发明申请
    Combustion apparatus 失效
    燃烧装置

    公开(公告)号:US20030143507A1

    公开(公告)日:2003-07-31

    申请号:US10348250

    申请日:2003-01-21

    Abstract: A combustion apparatus (1) with a burner port assembly (3) comprises an elongated first array of main burner ports (53) for jetting and burning a fuel gas mixture of a concentration to make main flames. The combustion apparatus (1) comprises at least one second arrays of auxiliary burner ports (63) for jetting and burning a further fuel gas mixture of a different concentration to make auxiliary flames, wherein the second arrays of said auxiliary burner ports (63) extend along the first array of said main burner ports (53). The burner port assembly (3) is constructed using inner and outer wall segments (52) together with outermost wall segments (52a,52f) or bands (58). One of the bands (58) faces the corresponding one of said outermost segments (52a,52f) so as to define between them collateral burner ports (61a,61b).

    Abstract translation: 具有燃烧器端口组件(3)的燃烧装置(1)包括用于喷射和燃烧浓缩以产生主要火焰的燃料气体混合物的主要燃烧器端口(53)的细长的第一阵列。 燃烧装置(1)包括用于喷射和燃烧不同浓度的另外的燃料气体混合物以形成辅助火焰的辅助燃烧器端口(63)的至少一个第二阵列,其中所述辅助燃烧器端口(63)的第二阵列延伸 沿着所述主燃烧器端口(53)的第一阵列。 燃烧器端口组件(3)使用内外壁段(52)与最外壁段(52a,52f)或带(58)一起构成。 一个带(58)面对相应的一个最外面的部分(52a,52f),以便在它们之间限定侧壁燃烧器端口(61a,61b)。

    Reduction of nitrogen oxides by staged combustion in combustors, furnaces and boilers
    86.
    发明授权
    Reduction of nitrogen oxides by staged combustion in combustors, furnaces and boilers 有权
    通过在燃烧室,炉子和锅炉中分段燃烧来还原氮氧化物

    公开(公告)号:US06453830B1

    公开(公告)日:2002-09-24

    申请号:US09794613

    申请日:2001-02-28

    Applicant: Bert Zauderer

    Inventor: Bert Zauderer

    Abstract: Nitrogen oxides, NOx, resulting from the excess air combustion of solid fuels in a combustor or burner in a furnace are reduced. By introducing sufficient additional fuel to the combustion gases in the furnace downstream of the primary combustion zone, a fuel rich gas zone is created in a temperature range that favors the conversion of NOx to nitrogen, N2. Further downstream sufficient additional air is added to complete the combustion of any unburned fuel. Alternatively, the fuel rich gas zone can be confined to a central region of the furnace. In that case, final combustion takes place when the fuel rich gas mixes with the untreated gas further downstream in the furnace. The preferred embodiment of this invention is to introduce the additional fuel in said downstream combustion zone as solid particles dispersed in aqueous droplets of varying size that vaporize throughout the furnace gas zone being treated. The dispersed solid fuel particles burn as they evolve from the droplets. Special injectors atomize the aqueous droplets into the combustion gas and disperse them throughout the optimum NOx reduction temperature zone. Alternatively, the fuel rich combustion zone can be produced with injection of liquid fuel droplets. A third alternative is to use pyrolysis gas emitted from the partial gasification of a solid fuel. A fourth alternative is to inject pulverized coal particles or shredded biomass particles into the optimum NOx reduction zone. The present staged combustion method using these fuels and fuel injection methods can be combined with other NOx reduction processes to yield large overall NOx emission reductions.

    Abstract translation: 减少了燃烧器或燃烧炉中的固体燃料的过量空气燃烧产生的氮氧化物,NOx。 通过向主燃烧区下游的炉内的燃烧气体引入足够的附加燃料,在有利于NOx转化为氮气的氮气的温度范围内产生富燃料气体区。 进一步下游,添加足够的额外空气以完成任何未燃烧燃料的燃烧。 或者,富燃气体区可以限制在炉的中心区域。 在这种情况下,当富燃料气体与未处理气体在炉内进一步下游混合时,发生最终燃烧。 本发明的优选实施例是将附加燃料引入所述下游燃烧区,作为分散在不同尺寸的水滴中的固体颗粒,其在待处理的整个炉气区域中蒸发。 分散的固体燃料颗粒从液滴中燃烧。 特殊喷射器将水滴雾化成燃烧气体并将其分散在整个最佳的NOx还原温度区域。 或者,可以通过喷射液体燃料液滴来生产富燃料燃烧区。 第三种选择是使用从固体燃料的部分气化中排出的热解气。 第四种选择是将粉煤颗粒或切碎的生物质颗粒注入最佳的NOx还原区。 使用这些燃料和燃料喷射方法的本阶段燃烧方法可以与其他NOx还原方法组合以产生大的总体NOx排放减少。

    Low-emission swirling-type furnace
    87.
    发明授权
    Low-emission swirling-type furnace 失效
    低排放旋流式炉

    公开(公告)号:US5769008A

    公开(公告)日:1998-06-23

    申请号:US700525

    申请日:1996-08-28

    Abstract: The low-emission swirling-type furnace is designed to burn organic fuel and it can be most advantegeously used for dust combustion. A low-emission swirling-type furnace, according to the invention, comprises a combustion chamber (1) with a prismatic dry-bottom hopper (5) having a slot mouth, and an undergrate blast inlet means (7) disposed thereunder. The furnace includes at least one burner (2) formed by at least a pair of ducts (2a,2b ) lying one above the other and intended for supplying the air-fuel mixture. The ducts (2a, 2b) are each provided with a device (3, 4) for controlling the "air/fuel" ratio, ensuring such a ratio between the amount of air and the amount of fuel in each of the ducts (2a,2b ) that for the overlying duct (2a), this ratio turns out to be invariably higher than for the underlying duct (2b). The longitudinal axes of the ducts (2a, 2b) are preferably so inclined that the angle between the longitudinal axis of the duct (2b) and the projection of this axis onto the furnace wall for an underlying duct is less than that for the overlying duct (2a). Furthermore, the furnace may also be provided with a means (8) for supplying the fuel of a specific size composition into each duct. During operating of such furnace, three functional zones are generated in the heating volume, namely: the ignition and active combustion zone, the reduction zone, and the reburning zone. This results in a reduced discharge of nitrogen oxides, along with an economical performance of the furnace.

    Abstract translation: PCT No.PCT / RU95 / 00282 Sec。 371日期:1996年8月28日 102(e)日期1996年8月28日PCT 1995年12月26日PCT PCT。 公开号WO96 / 21125 日期1996年7月11日低排放旋流式炉子设计用于燃烧有机燃料,可最有效地用于粉尘燃烧。 根据本发明的低排放旋流型炉包括具有槽口的棱柱形干底漏斗(5)的燃烧室(1)和设置在其下方的底部鼓风入口装置(7)。 该炉包括至少一个燃烧器(2),所述燃烧器(2)由至少一对彼此位于另一个之上并用于供应空气 - 燃料混合物的管道(2a,2b)形成。 管道(2a,2b)各自设置有用于控制“空气/燃料”比率的装置(3,4),确保空气量和每个管道(2a,2b)中的燃料量之间的比例, 2b)对于上覆管道(2a),该比率总是高于下面的管道(2b)。 管道(2a,2b)的纵向轴线优选地是这样倾斜的,使得管道(2b)的纵向轴线与该轴线的投影到下一个管道的炉壁上的角度小于上覆管道 (2a)。 此外,炉子还可以设置有用于将特定尺寸组合物的燃料供应到每个管道中的装置(8)。 在这种炉子的运行过程中,在加热容积中产生三个功能区,即点火和主动燃烧区,还原区和再燃烧区。 这导致氮氧化物的排放减少,以及炉的经济性能。

    Advanced reburning methods for high efficiency NO.sub.x control
    88.
    发明授权
    Advanced reburning methods for high efficiency NO.sub.x control 失效
    高效NOx控制的高级再燃烧方法

    公开(公告)号:US5756059A

    公开(公告)日:1998-05-26

    申请号:US848773

    申请日:1997-05-02

    Abstract: The present invention is related to methods and systems for preventing the release of nitrogen oxides with combustion flue gases emitted to the atmosphere. The invention is specifically directed to the removal of nitric oxide, nitrogen dioxide, and nitrous oxide from flue gas in stationary combustion systems. The methods of the invention improve efficiency of conventional reburning and advanced reburning processes by two key improvements, including the injection of a reducing agent into the reburning zone and the use of promoters, which considerably enhance NO.sub.x control. The promoters are metal-containing compounds that can be added to the reducing agents. These improvements allow either one or two stages of reducing agent injection for greater NO.sub.x control.

    Abstract translation: 本发明涉及用于防止排放到大气中的燃烧烟道气释放氮氧化物的方法和系统。 本发明特别涉及在固定燃烧系统中从烟道气中去除一氧化氮,二氧化氮和一氧化二氮。 本发明的方法通过两个关键的改进提高了常规再燃烧和高级再燃烧过程的效率,包括将还原剂注入再燃烧区域以及使用促进剂,这显着增强了NOx控制。 促进剂是可以添加到还原剂中的含金属化合物。 这些改进允许一个或两个阶段的还原剂注入用于更大的NOx控制。

    Combustion system and method for power generation
    90.
    发明授权
    Combustion system and method for power generation 失效
    燃烧系统及发电方法

    公开(公告)号:US5491968A

    公开(公告)日:1996-02-20

    申请号:US216021

    申请日:1994-03-21

    Inventor: Ahmad R. Shouman

    CPC classification number: F23C99/00 C02F11/08 C02F11/086 F23C6/04 F23C2201/301

    Abstract: A power generating combustion system and method are provided with a first stage combustion system that may include a wet oxidation reactor or a direct contact boiler and a second stage combustor including a stoichiometric burner to produce the substantially complete combustion of a wide range of fuels and mixtures of fuels to produce combustion products usable in generating power. The system design temperatures and pressures allow the substantially complete combustion of garbage, municipal and industrial waste and low quality fuels to generate power.

    Abstract translation: 发电燃烧系统和方法设置有第一级燃烧系统,其可以包括湿式氧化反应器或直接接触锅炉,以及包括化学计量燃烧器的第二级燃烧器,以产生广泛范围的燃料和混合物的基本上完全燃烧 的燃料以产生可用于发电的燃烧产物。 系统设计的温度和压力允许垃圾,市政和工业废物和低质量燃料的基本完全燃烧发电。

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